SOIL CONSERVATION Crossword

The chemical and physical processes that break down rock at earth's surface
The process by which water, ice, wind, or gravity moves weathered rock or soil
The geologic principle that the same geologic process that operated in the past to change Earth's surface
The type of weathering in which rock is physically broken into smaller pieces
The loose, weathered material on Earth's surface in which plants can grow
The solid layer of rock beneath the soil
Dark-colored organic material in soil
A measure of how well soil supports plant growth
Anything in the environment tha humans use
Rich, fertile soil that ismade up of about equal parts of clay, sand, and silt
The layer of soil that differs in color and texture from the layers above or below it
Soil organism that breaks down the remains of organisms and digests them
A thick mass o grass roots and soil
The management of soil to prevent its destruction
Plowing fields along the curves of a slope to prevent soil loss
The loose layer of dead plant leaves and stems on the surfaceof the soil
The grindimg away of rock by other rock particles carried in water, ice, or wind
Process that splits rock when water seeps into cracks, then freezes and expands
The process that breaks down rock through chemical changes
A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
Characteristic of a material that is full of tiny, connected air spaces that water can seep through
Mixture of humans, clay, and other minerals that forms the crumbly, topmost layer of soil
The area of the Great Plains where wind erosion caused soil loss during during the 1930's
Soil conservation method in which the dead stalks from the previous year's crop are left in the ground to hold the soil in place
The planting of different crops in a field each year to maintain the soil's fertility
The layer of soil beneath the topsoil that contains mostly clay and other minerals